12 Days of Christmas
833
99 Bottles of Beer
559
Abundant Numbers
543
Christmas Trees
662
Diamonds
199
Divisors
840
571
Emirp Numbers
360
Evil Numbers
338
Fibonacci
643
Fizz Buzz
393
429
690
433
706
726
700
470
598
500
589
575
624
477
472
644
561
705
Kolakoski Sequence
254
Leap Years
473
Niven Numbers
519
Odious Numbers
338
Pangram Grep
402
Pernicious Numbers
196
Prime Numbers
441
473
444
Sierpiński Triangle
90
Tongue-twisters
707
United States
96